Saw-tool.



C. L. JOHNSON.

SAW TOOL.

APPLIUATIDN FILED Nov.3,19oa.

Patented Jan. 11,1910.

Snowdon munsw. a. nimm co.. mm-unnammcsns mswnsmn, u. u.

CHARLES L. JOHNSON, OF SEATTLE, WASHINGTON.

SAW-TOOL.

Specification of Letters Patent.

Patented Jan. 11, 1910.

Application filed November 3, 1908. Serial No. 460,916`

',l'o all whom it met; concern:

liey it lrnown that l, (imnnns L. JonNsoN, a citizen ot' the UnitedStates of America, and a resident of the city of ticattle, in thecountjv ot King and State have invented certain new proveniente inSmv-l`ools, of which the lowing is a specitication.

'lihe primary object of nl v invention is to facilitate the jointing oicross cut saws, and the aim thereof is to provide an improved tool forjointing the multaneously presenting the ralrers breasting.

Further objects and advantages will be set forth as the descriptionprogresses and those features on which I desire protection, defined inthe claims.

In the accompanying drawing, in which I have shown a preferredembodiment of my invention :--Figure 1 is a perspective viewillustrzxting the tool in position on a saw to present a raker forjointing er breasting. Fig. 2 is a transverse section of the tool online 2-2 of Fig. l and illustrates the operation of jointing` a ralrer.Fig. 3 is a similar section taken on line 3--3 of Fig. l. Fig. 4 is aperspective view of one of the gaging devices' ren'loved, and Fig. C isa perspective view ot a modified form of the same.

In the present embodiment I have disclosed the features of my inventionin a combination tool including two sets of jointing` and gagingmembers, each set comprising a gaging device 1 and companion jointers 2,2 extending from opposite sides of the gage and conveniently consistingof hardened steel plates or strips riveted to respective flanges 3 of a`suitable trame, as 4. Jointers 2, 2 at one edge of the Jframe projectand face in an opposite direction to those at the opposite edge, asclearly shown in the drawing.

Each device l comprises a pair of parallel bars, as 1() and 11,overlapping the faces of adjacent jointers to provide an unobstructedpassage-way, for the teeth of a saw, from one jointer to the other.Extending over the space between the gage bars, are indicators 12, 12,see Fig. il, conveniently in the form of ribs spaced apart to receive atile therebetween and formed integral with said hars. These indicatorsor bridging parts 12 are spaced from the plane of the gaging faces 10and 11 of the bars so that their under faces will lie substantially evenand useful Im- 'folfor ot' IVaShington,

cutting teeth and si- ,V

l, l l

with the active faces` of adjacent jointcrs 2, when the parts ot thetool are proj'ierljT assembled, and thereby indicate the proper spacingo't'v the gage bars from the jointers, which spacing is el'teetcd b vplacing gaged shims or washers, as 5, between the overlapping portionsot' the gage bars and their rcspective jointcrs.

tetcrenee nun'ieral G indicates cap screws having screw threadedconnection, each with a respective flange il and engaging adjacent bars10 to secure the gaging devices l in position.

The spacing of the indicators 12 relatively to the gaging surfaces 10and l1 should be such as to indicate the greatest proper elearance ofthe points of the ralers relativeljY to the points of the cutting teethof the saw to be operated upon. This clearance should bc less in sawsintended tor felling than in those for bucking and l therefore. providethe two gaging devices 1 of the hardest metal obtainable, one arrangedto give proper clearance for the ralrers of 'felling saws and the otherto give proper clearance for the raltcrs of bucking saws.

In connection with frame 4 I have shown guides T and S for engaging theside face of the saw, as A, in operating the tool, as indicated in Figs.1 and 2, the guides T constitutinpedge extensions of the tlanges 3 andthe guides S consisting ot' ribs projecting from opposite faces of theframe. Intermediate the guides 8, a recess or pocket, as t), may beprovided in the body of frame 4- to receive extra shims or washers 5.

As it may be desirable at times to use a tile for jointing the cuttingteeth, as for eX- ample when the points of the teeth are extremely outof line, I provide set screws 13, carried bv lugs 1-1 of frame 4 forclamping the jointing tile F, sce Fig. 3, at either side of the toolagainst lugs 15, provided on the jointers 2.

The tool, engaged with the saw as shown in Figs. 1 and 2, is operated bysliding it along the blade with the cutting teeth engaging the adjacentjointcrs, and stopping at; each raker to present the same between the gae bars for jointing by means of a tile, as, thus jointing the rakers andlight jointing the cutting teeth of crosscut saws simultaneousljT in oneoperation. The unobstructed passage-way also adapts the tool for use onhand saws or any practically straight breasted saw with or withoutrakers. The size, form and spacing ot the rakerpresents uodit'lieulties` for the tool. ll`he hardened gaging plates and jointcrsand gaged washers or shims give the greafitest degree of stability andaccuracy possible in adjustment.

ln the modification shown in lfig. 5, the indicators are omitted and thegage bars 10 and 11l secured in position by screws ti and spaced bywashers 5 trom the jointers 2 carried by flanges 3 of frame 4'.

Having thus fully described my invention, what I claim as ne f anddesire to secure by Letters Patent ot the United States, is:

1. A saw tool comprising a body portion, spaced jointing membersthereon, and a gag ingr device extending between said jointing membersfrom beneath the adjacent end portions thereof and comprising a pair otspaced members extending lengthwise of the sl'iacc between said jointingmembers, and cross connecting means vfor said pair oic spaced membersformed to have its loiver surface substantially even with the underfaces otE said jointing members.

2. A savv tool comprising a body portion, spaced jointing membersthereon, a gaging device extending between said jointing mem berscomprising a pair of longitudinally disposed members spaced apartthroughout their length and having their end portions overlapping saidjointing members, spaced tile guides connecting said pair of spaced t tl t i l l t members and having bearing against the adjacent end taces otsaid jointiug n'iembers, and means supporting said gaging device foroutward adjustment relatively to said jointing members.

3. A saw tool comprising a body portieri, spaced jointing membersthereon, a gaging device conlprlsmg a pair ot' members spaced apart fortheir entire lengths and extending between .said 1jointing members andhaving their end portions overlapped thereby, and securing means engagedwith the end portions ot' the spaced members of said gaging device andwith the under 'faces ot' said jointingl members.

4. A saw tool comprising a body portion, spaced `iointing membersthereon, a gaging device comlnising a pair of members spaced apart t'ortheir entire lengths and extending between said jointing men'ibers andhaving their end portions overlapped thereby, and nieans vt'oradjustably snpiiorting said gaging device comprising headed screwsmounted in said `iointing n'lembers and delfiending from the under facesthereof and having their heads engaging over the edges of the spacedmembers of said gaging device.

Signed at Seattle, Vashiugton this 15th day ot' October 12108.

CHARLES L. JOHNSN.

Titnesses JULlUs L. BALDWIN, VWM. MAR'rlN.

